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Old 05-31-2013, 08:40 PM   #1
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Better gas mileage

I drive a 1998 TJ Jeep wrangler With 33 inch tires and a 4 inch lift kit And I get terrible gas mileage any ideas to make that better

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Old 05-31-2013, 08:42 PM   #2
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I drive a 1998 TJ Jeep wrangler With 33 inch tires and a 4 inch lift kit And I get terrible gas mileage any ideas to make that better
Regear and go easy on the long skinny pedal on the right.

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Old 05-31-2013, 08:45 PM   #3
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Regear and go easy on the long skinny pedal on the right.
That's about right. Driving style is the biggest thing other than proper gearing. Maybe eliminate any unnecessary weight you might have on it.
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Old 05-31-2013, 08:51 PM   #4
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Put a for sale sign on it. It's a jeep not a prius.
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Old 05-31-2013, 08:56 PM   #5
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I just bought the jeep in the last 4 months and my Mechanic said there was about 5,000 worth of work done underneath the jeep In lift and suspension it Is Procomp And the front and rear have been regeared and I am getting 200 Miles to a tank of gas
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Old 05-31-2013, 08:59 PM   #6
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I am stock with 31's and I get 200 to a tank. Be happy!!!! LOL
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Old 05-31-2013, 08:59 PM   #7
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That's +/- 14 mpg. Not bad for a lifted jeep in my opinion.
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Old 05-31-2013, 09:00 PM   #8
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200 miles to a tank.... How many gallons are you filling up after that 200 miles? Do you know if your speedo gear was swapped after the tires and regear?
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Old 05-31-2013, 09:02 PM   #9
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That's +/- 14 mpg. Not bad for a lifted jeep in my opinion.
Assuming he has the 15 gallon tank. Some came with 19 gallon tanks.
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Old 05-31-2013, 09:06 PM   #10
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Assuming he has the 15 gallon tank. Some came with 19 gallon tanks.
Touché sir...touché.
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Old 05-31-2013, 09:13 PM   #11
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Willing to bet the speedo gear is making it seem like you have less. I thought I was having low mileage on my 31s till i figured out the PO did nothing outside bigger tires and inspection mileage was higher than the odometer.
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Old 06-01-2013, 05:14 AM   #12
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I just bought the jeep in the last 4 months and my Mechanic said there was about 5,000 worth of work done underneath the jeep In lift and suspension it Is Procomp And the front and rear have been regeared and I am getting 200 Miles to a tank of gas
Stop guessing what your MPG is and do a real MPG calculation.
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Old 06-01-2013, 09:56 AM   #13
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replace your fuel filter/ strainer, it's in tank.
replace your air filter with a K&N
make sure your tires are at 35 psi
replace your spark plugs
make sure your battery terminals are clean, I mean sparkling.
this should get you a few extra miles / gallon.
And yes, do a proper mpg calculation.
I did all this and gained some m/g even with all the doubters out there it is possible.
I have over 200 miles on my tank so far and it isn't even in the red zone, <I know> this isn't a proper calculation, but as of right now I haven't had a chance to do one since I replaced my fuel sending unit. I can tell you I have 65 more miles on this tank so far than what is usual for me and my driving 20cty 20hwy / day
p.m. me if you want any private advice or have any questions. This forum is not a good place to discuss miles per gallon.
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Old 06-01-2013, 10:00 AM   #14
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It's a perfectly fine place to discuss MPG. It usually gets weird when folks start talking miles per tank, fractions thereof, or making claims that are based on miscalculations or disinformation.

At least that's been my experience here.
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Old 06-01-2013, 10:56 AM   #15
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Best I've gotten with my 33" 3"lift '99TJ is 21mpg average...but that was in duluth in the middle of sub zero winter. For some reason my TJ loved the cold weather. In summer and now in Baton rouge i get around 14-15mpg.
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Old 06-01-2013, 11:25 AM   #16
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K&N air filters are garbage and will yield no mpgs. You can replace your plugs and clean your throttle body... that may yield better mileage if the plugs in there are on their way out. You can also run a fuel cleaner like chevron's techron concentrate through a tank.
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Old 06-01-2013, 11:43 AM   #17
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I am stock with 31's and I get 200 to a tank. Be happy!!!! LOL
X2.....at 200 a tank and your set up...seems fine to me.
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Old 06-01-2013, 12:14 PM   #18
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Before I would spend another nickle on anything I would find out what my MPG is exactly. But if guessing is good enough then replace everything ChaddG suggests because he know more than the rest of us.
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Old 06-01-2013, 12:33 PM   #19
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Yea dont worry with silly aftermarket air filters. Your stock filter is just as efficient as any you will find for the rpm range our Jeeps operate in.
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Old 06-01-2013, 01:45 PM   #20
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It seem to me that our TJ's have 19 gallon tanks but only fifteen are available due to where the fuel pump is located. There is a fix somewhere I believe so all the fuel can be used.
Maybe someone will chime in with more knowledge on this.
Here is a link I found on this subject.
1998 TJ gas tank mod 15 to 19
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Old 06-01-2013, 02:10 PM   #21
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I drive a 1998 TJ Jeep wrangler With 33 inch tires and a 4 inch lift kit And I get terrible gas mileage any ideas to make that better
Yup, I have the solution! Sell it, buy a smart car and quit complaining about fuel mileage.
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Old 06-01-2013, 02:13 PM   #22
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And anyone with 33's saying they get 18-20mpg is full of garbage
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Old 06-01-2013, 02:15 PM   #23
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And anyone with 33's saying they get 18-20mpg is full of garbage
or they just drive lightly. any more than 20 I'd say they're full of garbage.
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Old 06-01-2013, 02:31 PM   #24
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or they just drive lightly. any more than 20 I'd say they're full of garbage.
Or they are blowin smoke up their on ass. A stock TJ barely gets 20
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Old 06-01-2013, 02:33 PM   #25
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I have a stock 2011 JK Unlimited. If I drive like an asshole I'm looking at 15mpg. If I drive like a respectable American citizen I'm looking at 19.3mpg. That was my very best
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Old 06-01-2013, 02:50 PM   #26
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put a for sale sign on it. It's a jeep not a prius.
x2
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Old 06-01-2013, 03:55 PM   #27
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I got a stock 00' and I'm pumped to get 15!
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Old 06-01-2013, 03:58 PM   #28
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It seem to me that our TJ's have 19 gallon tanks but only fifteen are available due to where the fuel pump is located. There is a fix somewhere I believe so all the fuel can be used.
Maybe someone will chime in with more knowledge on this.
Here is a link I found on this subject.
1998 TJ gas tank mod 15 to 19
I have the 19 but just stop when its low, a couple of gallons more each time you stop is not worth it. There is a gas station on every corner up here so who cares that much.
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Old 06-01-2013, 04:10 PM   #29
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Ahhh I'm not contributing to this thread lol Rather enjoy watching all the want-to-be scientists figure how to make a brick round hehehehe
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Old 06-01-2013, 06:19 PM   #30
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Ahhh I'm not contributing to this thread lol Rather enjoy watching all the want-to-be scientists figure how to make a brick round hehehehe
Hi, surprised your staying quiet today. What's new up there?

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April 2012.downsized and now a 99er.
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